1,699 Answered Questions for the topic biochemistry

Biochemistry

07/29/19

Decreasing the alcohol proof and faster in hangover, why?
My russian friend says that the USSR agents used/use the trick that they offered the victim first vodka and then last wine.I have noted that this puts you faster to hangover: decreasing the alcohol... more
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Biochemistry Evolution Cell Biology

07/29/19

Are there any multicellular forms of life which exist without consuming other forms of life in some manner?
The title is the question. If additional specificity is needed I will add clarification here.Are there any multicellular forms of life which exist without requiring the consumption (destruction) of... more
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Biochemistry Botany Plant Physiology

07/29/19

In plants why are potassium and nitrate ions absorbed faster than any others?
Quoting my A-level biology textbook: >$\\ce{K^+, NO3^-}$ are absorbed by plants faster than any other ions. Whereas, $\\ce{Ca^2+, SO4^2-}$ are absorbed with the slowest speed. What is the... more
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07/29/19

Appropriate Buffer for electerophoresis of DNA & Protein TBE or TAE?
Which buffer is best for DNA Electrophoresis and which is best for Protein to be have a sharp bond?Considering a higher electrical conductivity compared to TAE & TBE and the generation of less... more
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07/29/19

How many oxygen atoms are used up in aerobic oxidation of one pyruvate?
Please explain elaborately, if possible using the EMP, Krebs and ETS cycles.
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Biochemistry Cell Biology

07/29/19

Are the cytosol and extracellular fluids electrically neutral?
I've found several sources that state that overall, the cytosol of a cell is electrically neutral. The extracellular fluid is also purportedly electrically neutral. How can that be when we have... more
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Biochemistry Physiology Endocrinology

07/29/19

Biological Pathway of Lipid Hypothesis?
I've read a lot on both sides of the debate of low carb vs low fat diets trying to make some sense of what is being proposed. The lipid hypothesis runs roughly along the lines that we have lots of... more
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07/29/19

Bacterial cell lysis - what solution to use?
I am trying to determine how quickly detergents act on bacterial cells (cell lysis). I would like to compare some detergents at difference concentrations for bacteriolytic activity. I don’t care... more
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07/29/19

Can Oxaloacetate cross the outer mitochondrial membrane?
I am aware of the Malate–Aspartate Shuttle, but something is not clear to me and different sources seem to contradict each other. Some show oxaloacetate (OAA) being reduced to malate in the... more
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Biochemistry Pharmacology Toxicology

07/29/19

Are there dangers to Teflon and aluminium cookware?
I've been reading some articles on the internet about dangers of Teflon and aluminium to the body. My family say I'm just exaggerating the situation, and maybe I am, though I'm not sure because not... more
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07/28/19

According to Valence Bond Theory, what constitutes a triple bond?
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Biochemistry Science Biology Physiology

07/28/19

What cells or chemicals are involved in acute inflammation and immune response during infections?

When studying the physiology of the immune system and inflammation The cells involved are derived from the plasma portion of blood and the most common are neutrophils, NK cells, macrophages, T... more
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Biochemistry Genetics Microbiology

07/24/19

How does the polymerase protein know which gene to express?
I am not asking where the DNA or RNA polymerase starts to transcribe a gene. I want to know how does the polymerase know WHICH of thousands of genes on multiple chromsomes to pick at any one... more
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Biochemistry Sleep Endocrinology

07/19/19

What causes humans to be sleepy?
Is there a hormone or group of hormones that regulates when we feel sleepy late at night, or in the morning? Or is sleepiness caused by some other non-hormonal mechanism? (e.g. pure... more
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07/19/19

How do lipid-soluble substances diffuse through the cell membrane?
It’s said that water-soluble substances can diffuse through cell membrane with less ease than lipid-soluble substances because the former encounters impedance in the hydrophobic region of the... more
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07/19/19

Why do neurones use chemical signalling at synaptic junctions?
When a neurone fires, it sends an electrical signal that jumps down the axon via the nodes of Ranvier very rapidly. At a synaptic junction, chemical Brownian diffusion signalling with receptor... more
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07/18/19

Fermentation to acetic acid?
How much time is needed for the fermentation to acetic acid production cycle, and the conversion of apple vinegar in a sealed container incubated at 37 °C? Should be in the fully... more
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07/18/19

Do lysosomes play any role in cell division?
My biology textbook includes a point that lysosomes stimulates cell division without further elaborating. But studying it, I felt eerie about this function of lysosome. Then, I checked on the... more
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07/18/19

Do two compatible tRNA codons bond together?
Can two tRNA with complementary anti-codons link together? For instance UUU with AAA. If not, why not?
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07/18/19

Do chaperone proteins misfold?
If molecular chaperone proteins assist in the folding process of other proteins and misfolded proteins, can chaperone themselves misfold since they are also proteins? What would happen if... more
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Biochemistry Metabolism

07/17/19

Energy released during the production of ATP?
When glucose is used during aerobic and anaerobic exercise, how much energy is expended or required?During aerobic exercise:$C_6H_{12}O_6 + 6 O_2 \ o ATP + H_2O + 6 CO_2$ + energyDuring anaerobic... more
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Biochemistry Protein Folding

07/17/19

Why are proteins in the insoluble form when they are in frozen water?
Why would lowering the temperature of water change the intermolecular forces so much that proteins once soluble in water, become insoluble? I know freezing can create a crystal lattice, but I don't... more
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07/17/19

Why should phospholipid non-polar tails be "protected" in the membrane bilayer?
>lipids are arranged within the membrane with polar head towards the outer side and non polar tails towards inner side, this ensures that the non polar tail is protected from aqueous... more
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Biochemistry Microbiology Enzymes

07/17/19

Do disaccharidases require a cofactor or coenzyme to function?
I'm doing research on lactose intolerance and am curious if disaccharidases (enzymes that break down disaccharides) require a cofactor or coenzyme to function? Reviews or references would be... more
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Biochemistry Proteins

07/17/19

Is there a difference between polarity and hydrophobicity?
From literature the two terms seem to be interchangeable when discussing protein domains and motifs. But biochemically, what are the specific differences between these two terms? For example what... more
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